Natsume overhears whispers that a powerful youkai is reviving, later that evening he is trapped in a bottle as an offering.  Humans can’t see or hear him, so Nyanko-sensei decides to help the “best” way he can…
It just looks like a cat 
playing with an empty bottle.
Sólo veo a un gato jugando 
con un frasco vacío.
Lo mires por donde lo mires, es un gato jugando con un frasco vacío.
Parece um gato brincando com uma garrafa vazia...